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Known threats:6,256,925 Last Update:October 29, 10:23

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Win32.Small.aco

Aliases of Win32.Small.aco (AKA):

[Kaspersky]Trojan-Downloader.Win32.Small.aco
[McAfee]Vundo
[Other]W32/DLoader.WB, TROJ_SMALL.CB

How to Remove Win32.Small.aco from Your Computer^

To completely purge Win32.Small.aco from your computer, you need to delete the files and folders associated with Win32.Small.aco. These files and folders are respectively listed in the Files and Folders sections on this page.

For instructions on deleting the Win32.Small.aco files and folders, see the following section How to Delete Win32.Small.aco Files (.exe, .dll, etc.).

How to Delete Win32.Small.aco Files (.exe, .dll, etc.)^

The files and folders associated with Win32.Small.aco are listed in the Files and Folders sections on this page.

To delete the Win32.Small.aco files and folders:

  1. Using your file explorer, browse to each file and folder listed in the Folders and Files sections.
  2. Note: The paths use certain special folders (conventions) such as [%PROGRAM_FILES%]. Please note that these conventions are depending on Windows Version / Language. These conventions are explained here.
  3. Select the file or folder and press SHIFT+Delete on the keyboard.
  4. Click Yes in the confirm deletion dialog box.
  5. IMPORTANT: If a file is locked (in use by some application), its deletion will fail (the Windows will display a corresponding message).You can delete such locked files with the RemoveOnReboot utility. To delete a locked file, right-click on the file, select Send To->Remove on Next Reboot on the menu and restart your computer. You can install the RemoveOnReboot utility from here.

Downloader

A type of trojan. The primary purpose of downloaders is to install malicious code on a user’s computer. However, they can enable other malicious uses. For example, they can be used to continually download new versions of malicious code, adware, or “pornware.” They are also used frequently used to exploit the vulnerabilities of Internet Explorer.

Downloaders are typically written in script languages such as VBS or JavaScript.

Be Aware of the Following Downloader Threats:

Mariano, Madjid, Italian.Boy, Win32.TrojanDownloader.Dyfica, Win.AEP.

How Did My PC Get Infected with Win32.Small.aco?^

The following are the most likely reasons why your computer got infected with Win32.Small.aco:

  • Your operating system and Web browser's security settings are too lax.
  • You are not following safe Internet surfing and PC practices.

Downloading and Installing Freeware or Shareware

Small-charge or free software applications may come bundled with spyware, adware, or programs like Win32.Small.aco. Sometimes adware is attached to free software to enable the developers to cover the overhead involved in created the software. Spyware frequently piggybacks on free software into your computer to damage it and steal valuable private information.

Using Peer-to-Peer Software

The use of peer-to-peer (P2P) programs or other applications using a shared network exposes your system to the risk of unwittingly downloading infected files, including malicious programs like Win32.Small.aco.

Visiting Questionable Web Sites

When you visit sites with dubious or objectionable content, trojans-including Win32.Small.aco, spyware and adware, may well be automatically downloaded and installed onto your computer.

Detecting Win32.Small.aco^

The following symptoms signal that your computer is very likely to be infected with Win32.Small.aco:

PC is working very slowly

Win32.Small.aco can seriously slow down your computer. If your PC takes a lot longer than normal to restart or your Internet connection is extremely slow, your computer may well be infected with Win32.Small.aco.

New desktop shortcuts have appeared or the home page has changed

Win32.Small.aco can tamper with your Internet settings or redirect your default home page to unwanted web sites. Win32.Small.aco may even add new shortcuts to your PC desktop.

Annoying popups keep appearing on your PC

Win32.Small.aco may swamp your computer with pestering popup ads, even when you're not connected to the Internet, while secretly tracking your browsing habits and gathering your personal information.

E-mails that you didn't write are being sent from your mailbox

Win32.Small.aco may gain complete control of your mailbox to generate and send e-mail with virus attachments, e-mail hoaxes, spam and other types of unsolicited e-mail to other people.